'uphill' it is positive
'downhill' it is negative
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The slope of a horizontal line is zero. It has a slope, but slope = 0 and this makes it different from a vertical line which has a slope that is undefined because you cannot divide 0 over 0 which is how much a vertical line rises and runs.Ways to find slope:(y2-y1)/(x2-x1 )orrise/run
If you mean: 4x-2y = -3 then the slope of the line parallel to it will also have a slope of 2 but with a different y intercept
1, it will have the same slope but the y intercept will be different.
The line perpendicular to a line with a slope of 1/5 has a slope of -5.
It will have the same slope but with a different y intercept